ABSTRACT
Objective:To investigate the neutralization of lecithin and polysorbate-80 in antibacterial activity of oral solid tradition-al Chinese medicine preparations without Chinese medicinal herb powder. Methods:According to the requirements in Chinese Pharma-copeia (2015 edition), the applicability of microbial counting method was tested in the diluent containing lecithin and polysorbate-80 and the conventional diluent, respectively, and the results were compared. Results: The recovery results of applicability of microbial counting method using neutralizers (lecithin and polysorbate-80) conformed to the standard of Chinese pharmacopoeia (2015 edition). Conclusion:The combination of lecithin and polysorbate-80 has notable neutralization in antibacterial activity of oral solid traditional Chinese medicine preparations without Chinese medicinal herb powder.